For the answer to the above challenge, click forward to the Next Challenge.

Here is the answer to the Line C #1 Challenge:
Kxg6 f4 is a good move, but 1. Kg5 keeps both pawns from moving forward. After Black responds with 1…Kf3, White takes the pawn at 2. Kxg6 f4. Then 3. Kg5 allows White to pick off the last pawn with 4. Rxf4.